Design and construction of smart three-way change over switch and microcontroller-based pure sine wave inverter with remote monitoring solution
Date
2022-05
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Abstract
Intermittent power outages have rendered most developing countries' national grids
unreliable. Consumers have installed alternative energy sources such as solar panels and
wind turbines to combat this issue. Because of their nature, the output of these power sources
must be converted to match the national grid's output. Additionally, consumers must be able
to switch between these power sources when required quickly.
Many inverter solutions have been developed and are readily available in the market.
However, most affordable inverters produce a square wave, which is unsuitable for sensitive
electronics; sine-wave inverters, on the other hand, are perfect for all appliances but are
more expensive than square wave inverters.
Furthermore, many switching solutions are available in the market to allow consumers to
switch between power sources manually or automatically. These, however, can only switch
between two power sources.
This project has designed and developed a microcontroller-based pure sine wave inverter equipped with remote monitoring capabilities and a three-way intelligent changeover
switch. The inverter converts 12V DC to a single-phase 230V AC at 50Hz pure sine wave.
The three-way changeover utilizes a microcontroller to switch the power supply among
three input power sources.
Description
Capstone Project submitted to the Department of Engineering, Ashesi University in partial fulfillment of the requirements for the award of Bachelor of Science degree in Electrical and Electronic Engineering, May 2022
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Capstone Project
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Keywords
sine wave converter, changeover switch